i

Table of Contents Page Title

1 Floor plan/ Room utilization

2 Elevation (EAST)

3 Elevation (SOUTH)

4 Elevation (WEST)

5 Elevation (NORTH)

6 Foundation plan details

7 Foundation cross sections

A Main grade beam detail: Modified rubble trench

B Porch support beam footing detail

C Interior wall footing detail

8 Floor beam assembly

9 Roof bearing assembly

10 Roof truss plan

11 Truss cross section – looking east/west

12 Porch truss plan

13 Roof attachment detail

14 Truss cross section – looking north/south

15 Interior bathroom walls

16 Interior kitchen wall

17 Window / door buck construction details

18 Electrical / lighting plan

19 Load calculations and panel schedule

20 Plumbing plan

21 Plumbing isometric and fixture count

22 Heating / cooling mechanical plan

ii

Design Notes

1. Wall bracing: information not necessary for straw bale construction. See Pima County straw bale prescriptive standards for information on shear. 2. Sculpted sloping half wall: this is a non-load bearing cob wall, formed on a framework of 6610 remesh with #3 rebar reinforcements. The cob wall will be attached to the straw bale wall by forming the cob around 12” #4 rebar pins that have been driven into each adjacent bale (similar to attaching the window and door bucks, p. 17). The adobe floor will be poured around this wall. The height of the cob wall where it meets the straw bale wall is 6’ 8,” and the top of the cob wall slopes down to a minimum height of 3.’ 3. Range/stove: house plan does not show a range, which could be added on the east porch in the future. 4. Roof ventilation: blown-in cellulose insulation will fill the whole cavity up to the roof; roof ventilation is not needed. 5. Tie down straps: polyester machine strap from Carlson Systems, LLC (http://www.csystems.com/) will be used to attach the roof bearing assembly to the foundation. The strap has a tensile strength of 775 pounds and will be triple looped, increasing the strength to 2325 pounds. See foundation details (p. 6 and p. 7A) and roofing details (p. 9) for attachment specifications. 6. Vertical rebar: 2’ lengths of #4 rebar set 8” into the foundation and 16” into the overlying bales. Pins are spaced at 2’ intervals under bales except where spaced more closely next to door frames. 7. Straw bale dimensions: standard dimensions of 3-string bales used are 4’ long x 2’ wide x 16” tall and bales will be of adequate density with very low moisture content. 8. Building code: All construction will comply with IRC 2000, and with Pima County prescriptive code (Appendix Chapter 72 Straw-Bale Structures, sections 7201-7206) unless otherwise noted and approved in these plans. 9. Cooler (future): Solar Chill Model 1812HP 12V DC swamp cooler (http://www.nvo.com/southwestsolar/resources/) draws 53-73 watts on average. 10. Cooler installation: To allow for installation of a cooler in the future, a 23” x 25” framed opening will be made in the bale wall, fitted with removable covers, and stuffed with straw. Cooler can be vented into kitchen and bedroom through ducts in closet.

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(Page 7)

(C) Interior wall footing detail

4"

8"

PT 2x6 Wall base plate

Concrete interior wall footings

3"AB – Compacted earth and gravel

(B) Porch support beam footing detail

4"1'

-0"

12" Concrete tube Form Metal 4x4 post bracket

Concrete

2'-0"

1'-0

"

8" 3"

4"

24.00in.

3 stringer bale (Front)

23.00in.

Concrete (f’c >= 2000 psi) Crushed limestoneinsect barrier

Adobe

Pea rock infill

6mil Vapor barier

#4 Rebar (Continuous)

2'-2

"

#4 Rebar (2 ft)See note 6 and p.6

1 ½” Crushed Stone / Rubble4" Plastic drain pipe

(2" / 8' slope)

Metal termite barrier

6" Eye bolts(tension anchors set at 45 deg.)See note 5 and p. 6

6"

16.0

0in.

Weep screed

Trench and drain pipe lined with geotextile fabric

Pressure treated 2x4 toe-upsNailed to grade beamSee p. 8

5 1/2"

8"

Poly strap tie downsSee note 5

Undisturbed soil95% Minimum Soil Compaction

Undisturbed soil Undisturbed soil

(A) Main grade beam detail: Modified rubble trench

#4 Rebar (Continuous)

N

24.0

0in.

23.0

0in.23.00in.

23.00in.

24.00in.

24.0

0ft.

24.00ft.

PT 2x4 lumber toe-ups laid horizontally in running bond.Nailed into the grade beam with 3" Galvanized nails to

stabilize the boards.

Floor beam assembly (Page 8)

Pea Gravel infill between all lumber.

All door bucks built after floor beam assembly to

assist in placement of floor beam reinforcements.

Roof bearing assembly (Page 9)28

6 in

.

½” OSB Decking top and Bottom laid in running

bond formation

23.00in.

8'-0

" 6 1/

2"

23.00in.

Corners connected with 5/8" Machine bolts

2x6 Lumber bracing laid vertically in running bond.Avoid edges of OSB by 2' minimum

N

286 in.

Location of tie-down straps(Three layers of poly strap tie downs)Strength: 2325 lbs.See note 5

26'-10"2'

-0"

Roof truss plan (Page 10)

N

321.

38in

.

286 in.

2'-0

"

2'-0"

2x4 lookouts on 2' centers to support roof overhang.Mortised into trusses and overhanging walls by 18"

2'-0"

SunTubeSkylight

24'-0"

23'-10"

(Page 11)

26'-9 3/8"

4'-8

11/

16"

8'-6

15/

16"

Earth plaster

½” Wall Board

10'-3

5/1

6"

5/8 OSB roof sheathing

30# roofing felt

26 GA. Steel roofing panels

Bird blocking

Entire roof cavity filled with blown insulation

Refer to foundation cross section plans for details on foundation, adobe floor, and bale assembly.See p. 7

17.74in.

Truss manufactured by a licensed AZ manufacturer

Trusses attached to Roof Bearing Assembly with hurricane ties.See roof attachment detail on p. 13

All interior walls are non load bearing.

All structural lumber shall be grade stamped.

Porch truss plan (Page 12)

N

93.5

0in.

92.5

6in.

93.5

0in.

113.75in.

93.50in.92.56in.

93.50in.

113.75in.

All wall frames 2x6 lumber, studs on

16" centers

See porch roof attachment detail on p. 13

24'-0"

23'-10"

24.00in.

4"Truss cross section – looking north / south (Page 14)

1'-6"

26'-10"

2x4 look outs on 2' centers

2x6 Facia

boards

2x6 Lumber

4x4 Lumber

1'-6"

5/8 OSB Roof sheathing

26 GA. Steel roofing panels

30# roofing felt

7'-7

3/4

"

7'-6

1/4

"

9'-1

3/4

"

1'-0"113.79in.

117.97in.

Refer to foundation cross section plans for details on foundation, adobe floor, and bale assembly.See p. 7

Refer to roof bearing assembly for construction details on p. 9

See p.13 for roof attachment details.

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6" Compression bolt

All interior walls are non load bearing.All structural lumber shall be grade stamped.

8'-6"

96.50in.

7'-9

15/

16"

81.0

0in.

8'-7"

16.00in.

80.0

0in.

89.4

2in.

34.00in.

32.00in.

All wall frames 2x6 lumber, studs on 16"

centers

NORTH / SOUTH Wall

7'-9

15/

16"

89.5

0in.

62.51in.

Concrete footing on grade to support interior wall. See p. 7C

5'-8"

5'-9"

16.00in.5 1/2"32

.00i

n.

All wall frames 2x6 lumber, studs on 16"

centers

#4 Rebar rods driven through

holes in interior walls and through

bales.

EAST / WEST Wall

Bathroom is framed up with a drop ceiling. Initially, the gap between the truss and the non-load bearing wall will be 3". This gap will close as the bales compress and will be covered by the interior wall board.

3"

61.00in.

16.00in.

7'-0

"

79.5

0in.

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11'-0"

11'-1"

16.00in.

All wall frames 2x6 lumber, studs on 16" centers24

.50i

n.36

.00i

n.

2x4 Cabinet / Counter bracesSet into vert. lumber

EAST / WEST Wall

All interior walls are non load bearing.

All structural lumber shall be grade stamped.

Concrete footing on grade to support interior wall. See p. 7C

#4 Rebar rods driven through

holes in interior walls and through

bales.

This is a ¾ wall. 7' high and cathedral ceiling is 3' above.

Window / door buck construction details (Page 17)

View from front

View from back

Side profile

All window bucks are made on site with dimensions 1" greater than the width and height of the windows and doors.

They are pinned into the bales with 1' rebar spikes anchored in holes drilled into the wood buck reinforcing beams. There will be at least one spike per bale.

Once the bale walls have settled, the bucks are covered in stucco mesh.

EAST3' x5' Window3' x 6'8" Door (x2)

SOUTH7' x6'8" French Doors5' x5' Window

WEST2' x2' Window ( x2)3' x3' Window

NORTH3' x5' Window

Application of stucco mesh

8"

8" 6"

1'-2"

8"

8"

Header Construction

Side Box Construction

1 1/2"

3 1/16"

Base Construction

1'-2" 1'-2"1'-2"

1'-2"

(Page 18)

Load calculations and panel schedule (page 19)

Load calculations 576 ft2 x 3 volt amps/ft2 = 1728 VA 1056 ft2 (inc. porches) ÷ 120 = 14.4 A Small appliance load: 2 x 20 amp @ 2400 4,800 W Washer (future) + 1,500 W Range (future) + 12,000 W Hot water heater 30A @ 240 + 7,200 W Subtotal: 25,500 W 1st 10,000 @ 100% 10,000 W Remainder @ 40% = 15,500 x 0.4 + 6,200 W Total rating 16,200 W

÷ 240 = 67.5 A Service size: 200 A

Panel schedule Breaker Circuit Amps Wire 1 Bathroom GFI 20 12 2 Kitchen GFI 20 12 3 Kitchen 20 12 4 Refrigerator 20 12 5 Outdoor north and east 20 12 6 Outdoor north and west 20 12 7 Outdoor east 20 12 8 Bedroom AFCI (rec. & SD) 20 12 9 Desk 20 12 10 Lighting 15 14 11 AFCI Lighting 15 14 12 Range (future) 50 8 13 Domestic hot water 30 10 14 Range (future) 50 8 15 Domestic hot water 30 10 Note: All outdoor outlets will be covered boxes.

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